STM32G070RBT6基于Arduino串口的使用
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STM32G070RBT6基于Arduino串口的使用
📓STM32G070RBT6串口资源介绍
✨STM32G070RBT6总共有4个USART资源。
Serial1 for USART1
Serial2 for USART2
Serial3 for USART3
Serial4 for UART4
🔖默认情况下，只有一个Serialx实例映射到通用
Serial名。对于STM32G070RBT6而言，映射的管脚为：PA1和PA0。
- 📍在
C:\\Users\\Administrator\\AppData\\Local\\Arduino15\\packages\\STMicroelectronics\\hardware\\stm32\\2.3.0\\variants\\STM32G0xx\\G070RBT\\variant_generic.h中可以找到相关定义：
// Default pin used for generic 'Serial' instance
// Mandatory for Firmata
#ifndef PIN_SERIAL_RX
#define PIN_SERIAL_RX PA1
#endif
#ifndef PIN_SERIAL_TX
#define PIN_SERIAL_TX PA0
#endif
✅默认串口使用示例1
#define led1 PC2
#define led2 PC3
#define button1 PC0
#define button2 PC1
// the setup function runs once when you press reset or power the board
void setup()
Serial.begin(115200);//默认串口1的输出管脚：PA0 PA1。
// initialize digital pin LED_BUILTIN as an output.
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
digitalWrite(led1, LOW);
digitalWrite(led2, HIGH);
pinMode(button1, INPUT_PULLUP);
pinMode(button2, INPUT_PULLUP);
// the loop function runs over and over again forever
void loop()
digitalToggleFast(PC_2); // turn the LED on (HIGH is the voltage level)
digitalToggle(led2);
delay(1000); // wait for a second
Serial.println("Perseverance51");
digitalWriteFast(PC_2, !digitalReadFast(PC_2)) ; // turn the LED off by making the voltage LOW
digitalWrite(led2, !digitalRead(led2)) ;
delay(1000); // wait for a second
Serial.println("Arduino STM32G070RBT6");
🌼串口1指定到管脚使用示例2
// RX TX
HardwareSerial Serial1(PA10, PA9);//将串口1的管脚指定到PA10，PA9引脚上
// the setup function runs once when you press reset or power the board
void setup()
Serial1.begin(115200);
// initialize digital pin LED_BUILTIN as an output.
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
digitalWrite(led1, LOW);
digitalWrite(led2, HIGH);
pinMode(button1, INPUT_PULLUP);
pinMode(button2, INPUT_PULLUP);
// the loop function runs over and over again forever
void loop()
digitalToggleFast(PC_2); // turn the LED on (HIGH is the voltage level)
digitalToggle(led2);
delay(1000); // wait for a second
Serial1.println("Perseverance51");
digitalWriteFast(PC_2, !digitalReadFast(PC_2)) ; // turn the LED off by making the voltage LOW
digitalWrite(led2, !digitalRead(led2)) ;
delay(1000); // wait for a second
Serial1.println("Arduino STM32G070RBT6");
🌻将串口1复用到PC4和PC5引脚上
🌷示例4
#define led1 PC2
#define led2 PC3
#define button1 PC0
#define button2 PC1
// RX TX
HardwareSerial Serial1(PC5, PC4);
// the setup function runs once when you press reset or power the board
void setup()
// HardwareSerial(PA10, PA9);
Serial1.begin(115200);
// initialize digital pin LED_BUILTIN as an output.
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
digitalWrite(led1, LOW);
digitalWrite(led2, HIGH);
pinMode(button1, INPUT_PULLUP);
pinMode(button2, INPUT_PULLUP);
// the loop function runs over and over again forever
void loop()
digitalToggleFast(PC_2); // turn the LED on (HIGH is the voltage level)
digitalToggle(led2);
delay(1000); // wait for a second
Serial1.println("Perseverance51");
digitalWriteFast(PC_2, !digitalReadFast(PC_2)) ; // turn the LED off by making the voltage LOW
digitalWrite(led2, !digitalRead(led2)) ;
delay(1000); // wait for a second
Serial1.println("Arduino STM32G070RBT6");
📝将串口1复用到PB7和PB6引脚上
示例5
#define led1 PC2
#define led2 PC3
#define button1 PC0
#define button2 PC1
// RX TX
HardwareSerial Serial1(PB7, PB6);
// the setup function runs once when you press reset or power the board
void setup()
Serial1.begin(115200);
// initialize digital pin LED_BUILTIN as an output.
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
digitalWrite(led1, LOW);
digitalWrite(led2, HIGH);
pinMode(button1, INPUT_PULLUP);
pinMode(button2, INPUT_PULLUP);
// the loop function runs over and over again forever
void loop()
digitalToggleFast(PC_2); // turn the LED on (HIGH is the voltage level)
digitalToggle(led2);
delay(1000); // wait for a second
Serial1.println("Perseverance51");
digitalWriteFast(PC_2, !digitalReadFast(PC_2)) ; // turn the LED off by making the voltage LOW
digitalWrite(led2, !digitalRead(led2)) ;
delay(1000); // wait for a second
Serial1.println("Arduino STM32G070RBT6");
🛠除了上面定义方式外还有另一种指定串口的方法
void setRx(uint32_t rx)
void setTx(uint32_t tx)
void setRx(PinName rx)
void setTx(PinName tx)
🚩注意点：重载函数名相同，形参注意区分。
- 🌿
variant_generic.h头文件声明了数字引脚
/*----------------------------------------------------------------------------
* STM32 pins number
*----------------------------------------------------------------------------*/
#define PA0 PIN_A0
#define PA1 PIN_A1
#define PA2 PIN_A2
#define PA3 PIN_A3
#define PA4 PIN_A4
#define PA5 PIN_A5
#define PA6 PIN_A6
#define PA7 PIN_A7
#define PA8 8
#define PA9 9
#define PA10 10
#define PA11 11
#define PA12 12
#define PA13 13
#define PA14 14
#define PA15 15
#define PB0 PIN_A8
#define PB1 PIN_A9
#define PB2 PIN_A10
#define PB3 19
#define PB4 20
#define PB5 21
#define PB6 22
#define PB7 23
#define PB8 24
#define PB9 25
#define PB10 PIN_A11
#define PB11 PIN_A12
#define PB12 PIN_A13
#define PB13 29
#define PB14 30
#define PB15 31
#define PC0 32
#define PC1 33
#define PC2 34
#define PC3 35
#define PC4 PIN_A14
#define PC5 PIN_A15
#define PC6 38
#define PC7 39
#define PC8 40
#define PC9 41
#define PC10 42
#define PC11 43
#define PC12 44
#define PC13 45
#define PC14 46
#define PC15 47
#define PD0 48
#define PD1 49
#define PD2 50
#define PD3 51
#define PD4 52
#define PD5 53
#define PD6 54
#define PD8 55
#define PD9 56
#define PF0 57
#define PF1 58
#define PA9_R 59
#define PA10_R 60
// Alternate pins number
#define PA6_ALT1 (PA6 | ALT1)
#define PA7_ALT1 (PA7 | ALT1)
#define PA7_ALT2 (PA7 | ALT2)
#define PA7_ALT3 (PA7 | ALT3)
#define PA15_ALT1 (PA15 | ALT1)
#define PB0_ALT1 (PB0 | ALT1)
#define PB1_ALT1 (PB1 | ALT1)
#define PB1_ALT2 (PB1 | ALT2)
#define PB6_ALT1 (PB6 | ALT1)
#define PB13_ALT1 (PB13 | ALT1)
#define PB14_ALT1 (PB14 | ALT1)
#define PB15_ALT1 (PB15 | ALT1)
#define PB15_ALT2 (PB15 | ALT2)
#define PC4_ALT1 (PC4 | ALT1)
#define PC5_ALT1 (PC5 | ALT1)
#define PC8_ALT1 (PC8 | ALT1)
#define PC9_ALT1 (PC9 | ALT1)
#define PC10_ALT1 (PC10 | ALT1)
#define PC11_ALT1 (PC11 | ALT1)
#define NUM_DIGITAL_PINS 61
#define NUM_REMAP_PINS 2
- ⚡
PinNames.h头文件定义了形参PinName枚举类型
typedef enum
// Not connected
NC = 0xFFFFFFFF,
// Pin name definition
PA_0 = (PortA << 4) + 0x00,
PA_1 = (PortA << 4) + 0x01,
PA_2 = (PortA << 4) + 0x02,
PA_3 = (PortA << 4) + 0x03,
PA_4 = (PortA << 4) + 0x04,
PA_5 = (PortA << 4) + 0x05,
PA_6 = (PortA << 4) + 0x06,
PA_7 = (PortA << 4) + 0x07,
PA_8 = (PortA << 4) + 0x08,
PA_9 = (PortA << 4) + 0x09,
PA_10 = (PortA << 4) + 0x0A,
PA_11 = (PortA << 4) + 0x0B,
PA_12 = (PortA << 4) + 0x0C,
PA_13 = (PortA << 4) + 0x0D,
PA_14 = (PortA << 4) + 0x0E,
PA_15 = (PortA << 4) + 0x0F,
PB_0 = (PortB << 4) + 0x00,
PB_1 = (PortB << 4) + 0x01,
PB_2 = (PortB << 4) + 0x02,
PB_3 = (PortB << 4) + 0x03,
PB_4 = (PortB << 4) + 0x04,
PB_5 = (PortB << 4) + 0x05,
PB_6 = (PortB << 4) + 0x06,
PB_7 = (PortB << 4) + 0x07,
PB_8 = (PortB << 4) + 0x08,
PB_9 = (PortB << 4) + 0x09,
PB_10 = (PortB << 4) + 0x0A,
PB_11 = (PortB << 4) + 0x0B,
PB_12 = (PortB << 4) + 0x0C,
PB_13 = (PortB << 4) + 0x0D,
PB_14 = (PortB << 4) + 0x0E,
PB_15 = (PortB << 4) + 0x0F,
#if defined GPIOC_BASE
PC_0 = (PortC << 4) + 0x00,
PC_1 = (PortC << 4) + 0x01,
PC_2 = (PortC << 4) + 0x02,
PC_3 = (PortC << 4) + 0x03,
PC_4 = (PortC << 4) + 0x04,
PC_5 = (PortC << 4) + 0x05,
PC_6 = (PortC << 4) + 0x06,
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